格子Boltzmann方法在液滴界面行为研究中的应用现状

Application of lattice Boltzmann method in interfacial behaviors of liquid drops

液滴运动通常伴随着组分传输、界面进化和化学反应等过程,是典型的非线性、非平衡、多尺度、复杂多相现象,因此采用传统的计算流体力学方法难以捕捉液滴相界面进化。介绍了基于介观动力学的格子Boltzmann方法作为模拟复杂多相流动的有效建模工具的特点,阐述了格子Boltzmann多相模型及其进展概况,并论述了近10年来格子Boltzman方法在液滴界面行为中的应用现状。研究表明,格子Boltzmann方法是研究液滴界面行为的有效手段,可获取丰富的界面信息,这些解析将有助于促进微流体系统的传热传质性能的改善,是未来许多工程中相界面问题的普遍可视化研究方法。

Liquid drops movenlent is usually companied by processes such as species transfer and interface movement, as well as chenfical reactions and so on, which has phenomena of non-linear, non-equilibrium, multiscale and complex nmltiphase, therefore, it is difficult to catch the interface movenlent of liquid drops by traditional computational fluid mechanics methods. As an effective modeling tool to simulate such complex multiphase system, the characteristics of the lattice Boltzmann method are presented, and some applications of the lattice Boltzmann method in inteffaeial behaviors of liquid drops in past decades are shown with specific examples. There is no doubt that this method would be an efficient numerical alternative for computational fluid dynamics in the future, and offer valuable insight into multiphase flow problems in real world, and become a digital design method for dynamic fluid interfaces of interest to promote heat and mass transfer in many practical applications.